Asap! plz 1. what important city prospered in the yellow river valley? what was unique about the buildings in this city? why did this city prosper? what was the cause of its decline?

1. Anyang The capital city

All the others I have no idea..

The four river valley civilizations were the Tigris & Euphrates Valleys, the Nile River Valley, the Indus River Valley, and the Yellow River Valley. Civilizations developed around rivers because their waters provided places to hunt and fish. Also, as the rivers flooded, the lands around them became fertile. I got this off a website hope i could help out

#1 im pretty sure its a.

well the fact it is basically a peninsula allowed trade to come from many places, thus allowing cultural diffusion to take place. india has seasonal monsoons that merchants travel back and forth from india using the monsoons wind patterns